Teacher Killed ‘With a Sharp Tool’ in Abu Dhabi Shopping Mall, Mother Ibolya Ryan was followed into the bathroom by attacker dressed in black, prompting security concerns for expats in UAE.

A suspect seen entering the mall in CCTV footage minutes before the killing on Monday wore the traditional robe worn by Arab women in the region. But police left open the possibility that the bulky figure could have been a man in disguise.

Police on Wednesday posted video of the suspect.

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“Investigations are still under way to identify the suspect’s identity and gender. Witnesses reported that the culprit was fully covered wearing an abaya, black gloves and face cover,” a police statement said.

Police said the teacher, 37, was stabbed with a “sharp tool” and that the cause of the fight, which broke out in the women’s toilet, remains unknown. The suspect fled the scene.

The U.S. Embassy in the United Arab Emirates posted a statement in October saying that an anonymous post on a jihadist web forum had called for attacks on American teachers in the region but that it had no credible evidence of any such plots.

Her 11-year-old twins have been placed in the care of the community police as they await arrival of their father, the victim’s ex-husband, from overseas.

Khidmah, the manager of the building, have assured residents of Sun Tower and Sky Tower that it is “working closely with the police and related authorities to fully assist with the investigation, and would also stress that all necessary measures are being undertaken to ensure the care of residents at this delicate time”.

Khidmah added: “We want to reassure our residents that their safety and well-being are our priority, and although this incident has caused shocked and disbelief throughout the community, there is no cause to be concerned for the safety of yourselves and families.”

Col Rashid Bourscheid, director of CID at Abu Dhabi Police said that the reasons for the attack are unknown. He urged anyone with any information to contact police or the Ministry of Interior on 800 2626.